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Cryptanalysis and improvement of piveteau signature scheme with message recovery

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3 Author(s)
Zichen Li ; Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China; Department of Computer Science and Technology, Jiaozuo Institute of Technology, Jiaozuo 454159, China ; Junxiang Cheng ; Yiqi Dai

Piveteau signature scheme allows message recovery but the methodology differs from that of the Nyberg-Rueppel schemes. This paper analyzes the security of the Piveteau scheme by designing some attacks. Two improved methods to Piveteau signature scheme and Nyberg-Rueppel schemes were developed to avoid these weaknesses. Analyses of the security of the improved schemes prove that the improved methods can effectively handle the attacks proposed in this paper.

Published in:

Tsinghua Science and Technology  (Volume:8 ,  Issue: 2 )